Sword-maker Irish Mike and his team make two giant weapons: a 6-foot sword shaped like a lightning bolt, and a huge Indian chakram (throwing weapon). Assistant welder Erik goes rogue on the chakram's design, risking the weapon's entire budget.
An eccentric, modern-day knight hires sword-maker Irish Mike to build a giant, dragon-shaped sword that shoots real flames. Assistant welder Erik bets Mike he can create a top-quality weapon of his own: a steel fist with deadly, interchangeable heads.
Sword-maker Irish Mike creates two giant weapons: a sword shaped like a whale and a "Lock Blade" that swings open like a folding knife. A weapon test goes horribly wrong when Mike sets the blade on fire and accidentally ignites himself in the process.
Irish Mike crafts a Greek-inspired sword for the strongest woman in America. Meanwhile, the crew gets in trouble scavenging parts for a "rat rod" battle axe.
Financial problems may cause Irish Mike's business to go under; the team makes a sword that resembles Cerberus; Mike builds a bomb to bond with his daughter Nova.
Sword-maker Irish Mike is hired to make a 34-inch sword for the world's tallest sword swallower. Mike's patience is tested when an obnoxious client keeps altering his order. Amelia has long-awaited news about the business's profitability.